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Synchronous Sampling and Demodulation in an Instrument for Multifrequency Bioimpedance Measurement
Direct sampling of known carriers is the preferred digital method for measuring biomodulation of tissue impedance. Due to limited resolution and conversion rate of analog-to-digital converters and limited processing power of available digital processors and/or lack of energy resources, conventional...
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| Published in: | IEEE transactions on instrumentation and measurement 2007-08, Vol.56 (4), p.1365-1372 |
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| Main Authors: | , , , , |
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| cites | cdi_FETCH-LOGICAL-c320t-b6d9fcd1fc9ce6a5fad8d489a773626892664a0212270d01ad529b8efa4b87533 |
| container_end_page | 1372 |
| container_issue | 4 |
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| container_title | IEEE transactions on instrumentation and measurement |
| container_volume | 56 |
| creator | Min, M. Parve, T. Ronk, A. Annus, P. Paavle, T. |
| description | Direct sampling of known carriers is the preferred digital method for measuring biomodulation of tissue impedance. Due to limited resolution and conversion rate of analog-to-digital converters and limited processing power of available digital processors and/or lack of energy resources, conventional discrete-Fourier-transform-based algorithms are not efficient in small medical devices. Knowing exactly the frequencies of carriers (and excitations), an energy-saving fast signal processing method can be developed and implemented. When sampling synchronously with a carrier, it is possible to minimize the complexity of calculations and to introduce a digital-to-analog feedback for enhancement of resolution by digitizing only the small variations between adjacent samples. The proposed system is qualified on proprietary hardware. |
| doi_str_mv | 10.1109/TIM.2007.900163 |
| format | article |
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Due to limited resolution and conversion rate of analog-to-digital converters and limited processing power of available digital processors and/or lack of energy resources, conventional discrete-Fourier-transform-based algorithms are not efficient in small medical devices. Knowing exactly the frequencies of carriers (and excitations), an energy-saving fast signal processing method can be developed and implemented. When sampling synchronously with a carrier, it is possible to minimize the complexity of calculations and to introduce a digital-to-analog feedback for enhancement of resolution by digitizing only the small variations between adjacent samples. The proposed system is qualified on proprietary hardware.</description><identifier>ISSN: 0018-9456</identifier><identifier>EISSN: 1557-9662</identifier><identifier>DOI: 10.1109/TIM.2007.900163</identifier><identifier>CODEN: IEIMAO</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Algorithms ; Analog-digital conversion ; Analog-to-digital (A/D) conversion ; Bioimpedance ; biomodulation ; Carriers ; Demodulation ; Digital ; digitizing ; electrical bioimpedance ; Energy resolution ; Energy resources ; Feedback ; Impedance measurement ; Instrumentation ; Instruments ; multichannel measurement ; multifrequency measurement ; Sampling ; Sampling methods ; Signal processing algorithms ; Signal resolution ; simultaneous measurement ; Surgical implants ; synchronous sampling</subject><ispartof>IEEE transactions on instrumentation and measurement, 2007-08, Vol.56 (4), p.1365-1372</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2007</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c320t-b6d9fcd1fc9ce6a5fad8d489a773626892664a0212270d01ad529b8efa4b87533</citedby><cites>FETCH-LOGICAL-c320t-b6d9fcd1fc9ce6a5fad8d489a773626892664a0212270d01ad529b8efa4b87533</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/4277035$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,54796</link.rule.ids></links><search><creatorcontrib>Min, M.</creatorcontrib><creatorcontrib>Parve, T.</creatorcontrib><creatorcontrib>Ronk, A.</creatorcontrib><creatorcontrib>Annus, P.</creatorcontrib><creatorcontrib>Paavle, T.</creatorcontrib><title>Synchronous Sampling and Demodulation in an Instrument for Multifrequency Bioimpedance Measurement</title><title>IEEE transactions on instrumentation and measurement</title><addtitle>TIM</addtitle><description>Direct sampling of known carriers is the preferred digital method for measuring biomodulation of tissue impedance. Due to limited resolution and conversion rate of analog-to-digital converters and limited processing power of available digital processors and/or lack of energy resources, conventional discrete-Fourier-transform-based algorithms are not efficient in small medical devices. Knowing exactly the frequencies of carriers (and excitations), an energy-saving fast signal processing method can be developed and implemented. When sampling synchronously with a carrier, it is possible to minimize the complexity of calculations and to introduce a digital-to-analog feedback for enhancement of resolution by digitizing only the small variations between adjacent samples. The proposed system is qualified on proprietary hardware.</description><subject>Algorithms</subject><subject>Analog-digital conversion</subject><subject>Analog-to-digital (A/D) conversion</subject><subject>Bioimpedance</subject><subject>biomodulation</subject><subject>Carriers</subject><subject>Demodulation</subject><subject>Digital</subject><subject>digitizing</subject><subject>electrical bioimpedance</subject><subject>Energy resolution</subject><subject>Energy resources</subject><subject>Feedback</subject><subject>Impedance measurement</subject><subject>Instrumentation</subject><subject>Instruments</subject><subject>multichannel measurement</subject><subject>multifrequency measurement</subject><subject>Sampling</subject><subject>Sampling methods</subject><subject>Signal processing algorithms</subject><subject>Signal resolution</subject><subject>simultaneous measurement</subject><subject>Surgical implants</subject><subject>synchronous sampling</subject><issn>0018-9456</issn><issn>1557-9662</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNpdkL1v2zAUxImgBeKmmTN0Ibp0ksMPiR9jmzSpARsZnMwERT61DCTSJaXB_31pOMjQ6QGH3x3uHUI3lKwpJfr2ebNbM0LkWhNCBb9AK9p1stFCsA9oVTXV6LYTl-hTKa-kgqKVK9Tvj9H9ySmmpeC9nQ5jiL-xjR7fw5T8Mto5pIhDrBrexDLnZYI44yFlvFvGOQwZ_i4Q3RH_CClMB_A2OsA7sGXJcGI_o4-DHQtcv90r9PLw8_nuV7N9etzcfd82jjMyN73wenCeDk47ELYbrFe-VdpKyQUTSjMhWksYZUwST6j1HdO9gsG2vZId51fo2zn3kFOtVGYzheJgHG2E-p2pEGmpYrKSX_8jX9OSYy1nlOBSaclPcbdnyOVUSobBHHKYbD4aSsxpcVMXN6fFzXnx6vhydgQAeKdbJiXhHf8HbsV9mw</recordid><startdate>20070801</startdate><enddate>20070801</enddate><creator>Min, M.</creator><creator>Parve, T.</creator><creator>Ronk, A.</creator><creator>Annus, P.</creator><creator>Paavle, T.</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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Due to limited resolution and conversion rate of analog-to-digital converters and limited processing power of available digital processors and/or lack of energy resources, conventional discrete-Fourier-transform-based algorithms are not efficient in small medical devices. Knowing exactly the frequencies of carriers (and excitations), an energy-saving fast signal processing method can be developed and implemented. When sampling synchronously with a carrier, it is possible to minimize the complexity of calculations and to introduce a digital-to-analog feedback for enhancement of resolution by digitizing only the small variations between adjacent samples. The proposed system is qualified on proprietary hardware.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TIM.2007.900163</doi><tpages>8</tpages></addata></record> |
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| identifier | ISSN: 0018-9456 |
| ispartof | IEEE transactions on instrumentation and measurement, 2007-08, Vol.56 (4), p.1365-1372 |
| issn | 0018-9456 1557-9662 |
| language | eng |
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| source | IEEE Electronic Library (IEL) Journals |
| subjects | Algorithms Analog-digital conversion Analog-to-digital (A/D) conversion Bioimpedance biomodulation Carriers Demodulation Digital digitizing electrical bioimpedance Energy resolution Energy resources Feedback Impedance measurement Instrumentation Instruments multichannel measurement multifrequency measurement Sampling Sampling methods Signal processing algorithms Signal resolution simultaneous measurement Surgical implants synchronous sampling |
| title | Synchronous Sampling and Demodulation in an Instrument for Multifrequency Bioimpedance Measurement |
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